Loose-leaf binders



March 12, 1957 c. J. PAN'FIL 2,784,719

LOOSE-LEAF BINDERS 7 Filed April 15, 1955 4 sheets-sheet 1 FIG. 1.

I N VEN TOR. CONRAD J PANFIL Ar TORNEYS March 1957 vc. J. PANFIL LOOSE-LEAF BINDERS 4 Sheets-Sheet 2 Filed April 15, 1953 INVENTOR.

Comm: J Pam-u.

ATTORNEYS March 12, c PANFIL LOOSE-LEAF BINDERS' 4 She ets-Sheet I5 Filed April 15, 1955 1N VEN TOR. 60mm J PANFIL z jmuu A TTORNEYS March 12, 1957 c. J. PANFIL 2,784,719

LOOSE-LEAF BINDERS Filed April 15,- 1953 4 Sheets-Sheet 4 INVENTOR.

' CONRAD J. PANFIL kahaajw ATTORNEYS United States Patent LOOSE-LEAF BINDERS Application April 15, 1953, Serial No- 348,945

3 Claims. (Cl. 129-43) This invention relates to loose-leaf binders having telescoping back sections. This applicationv constitutes a continuation in part of application Serial No. 104,779, filed July 14, 1949, now abandoned, for loose-leaf binder.

An object of the invention is to provide a loose-leaf binder of this type in which the leaf-securing means may be quickly released arcuately from locked position without having to withdraw the leaf-securing means longitudinally from the locking mechanism.

Another object is to provide a loose-leaf binder having telescopic back sections which may be explained fully to reference position without releasing the locking mechanism.

Another object is to provide a loose-leaf binder having telescopic back sections in which a single piece of covering material is used for each half of the binder to protect the cover member and its associated back section and which serves to hingedly secure the respective covers and back sections together.

A further object is to provide a loose-leaf binder having telescoping back sections which is relatively cheap to manufacture and which is simple and eflicient to operate.

Another object is to provide a loose-leaf binder with telescoping back sections which are of. the same length and have no metal exposures on the outside surface.

Another object is to avoid all outside metal exposure on loose-leaf binders having telescoping back sections.

These and other objects and advantages are set forth in the description of an embodiment of the invention illustrated in the accompanying drawing.

In the drawing:

Figure 1 is a perspective view of a loose-leaf binder embodying the invention in an unexpanded position with. the

covers open;

Fig. 2 is a fragmentary perspective view of the binder with the telescoping back members expanded;

Fig. 3 is a fragmentary enlarged cross-sectional view of the binder of the invention;

Fig. 4 is a perspective view of a loose-leaf binder with the locking bar released and with portions broken away to illustrate certain of the structure;

Fig. 5 is an enlarged fragmentary perspective view of part of the binder with the locking bar in locked position and with portions broken away;

Fig. 6 is a longitudinal view of the locking bar when in locked position illustrating the relative position. of the same to the securing studs for the channel and transfer ba-r;

Fig. 7 is an enlarged detail sectional view taken vertically through the stud which secures the assembly to the flange;

Fig. 8 is an enlarged detail sectional view taken vertically through the locking head and the assembly when the binder is closed;

Fig. 9 is an enlarged detail perspective view of an alternative stop pin with the adjacent parts broken. away and sectioned; and

2,784,719 Patented Mar. 12, 1957 Fig. 10 is a detail section centrally and vertically of the stop pin of Fig. 9 and the adjacent parts.

In the drawing, the reference number 1 indicates a back section which includes a metal plate 2 having an upright flange 3 extending at a right angle thereto along one side thereof.

A plate member 4 of chip board or binders board is disposed on and secured to the outer and inner surfaces of plate 2 and flange 3.

A covering 5 extends continuously over the board 4 and edges of plate 2, and may be of leather, imitation leather or any suitable wear-resisting material. The covering material 5 extends over the upper edge of flange 3 for a purpose hereinafter later explained.

A second back section comprising a metal plate 6 is disposed above and parallel to metal plate 2, and like the latter, has secured to the outer and inner surfaces thereof, binders board or chip board. The inner and outer surface of the board on plate 6 are likewise covered with a suitable material, preferably sirniiar to material 5. Channel members 8 are struck from plate 6 near either end thereof and are disposed along the inner longitudinal edge of member 6.

A metal post-carrying bar 9 of a width substantially that of the height of flange 3 is disposed adjacent plate 6 and is hingedly secured thereto by extending the covering material 7 continuously thereover on both the inside and outside. Bar 9 serves as a base for a plurality of hollow posts upon which are impaled the sheets disposed within the binder and also functions as a counterpart to upstanding flange 3 when the binder is closed with the locking mechanism locked.

A third back plate 10, preferably of metal, and having a flange 11 extending at right angles thereto along one edge thereof, is disposed so that plate 10 parallels metal plates 2 and 6 and flange 11 parallels flange 3 of plate 2. The upper portion of flange 11 is preferably formed to substantial channel shape with the legs of the channel disposed toward flange member 3. Flange members 3 and 11 are secured together but in spaced relationship to one an other. For this purpose a pair of cylindrical spacer stud members 12 are disposed between the flanges 3 and 11 and have reduced end portions 14 which extend through the respective flanges and are peened over to secure the flangesthereon. Backing plate It with its integral and angularly disposed channel-shaped flange 13 is of a length slightly less than the distance between channel members 8 disposed at each end of plate 6. Opposite flange 11, and forming a part of plate 10 and disposed at opposite ends thereof, are ears 15 which extend outwardly longitudinally from plate 10 and in the same horizontal plane as the plate.

Backing plate 6 is disposed for telescopic movement between. backing plates 2 and 10, and when the binder is fully extended, channel members 8 on plate 6 will abut ears15 of plate 10 and prevent complete separation of the halves of the binder.

Locking bar 16 is slidably disposed in channel-shaped ter with similarlyshaped apertures 13 in flange 11 when locking bar 1'6 is moved to unlocked position. It will be noted that the. mid-portion of one of the cylindrical stud members 12 serves the. additional function of a bearing in elongated. slot 21 for one end of locking bar 16... The

remainder of the locking bar rides on the lower, legsofi hauu lr ancd fla g .1, Th spac r member .12 a

the opposite end of flange 11 may serve as astop for loclt ing bar 16 when the sheet securing means is in locked position. The upper ends of slots 20 in bar 16 and apertures 13 in flange 11 are open for a purpose to be stated hereinafter.

Bar 9 has secured thereto, a plurality of tubular posts 22 upon which are impaled the loose-leaf sheets disposed within the binder. Transfer bar 23 is provided with a plurality of solid cylindrical posts 24 which fit within tubular posts 22 and co-operate to retain the sheets in position Within the binder. Locking studs 25 secured to the outer surface of bar 23 register with the corresponding slots 20 in flange 3 and 13 in flange 11, and fit within the corresponding slots 18 and 19 in either end of locking bar 16 where the latter moves longitudinally inwardly of the binder, thereby locking the transfer bar 23 to flange 11. The transfer bar together with the sheets impaled on tubular posts 22 may be readily released from locked position simply by pulling handle 17 outwardly. This will permit locking studs 25 to pass upwardly through the open ends of slots 20 and 13, and the transfer bar to swing arcuately away from flange 11 and thereby permit access to the sheets of the binder without having first to withdraw the locking studs horizontally to free the heads of the studs from any circular apertures such as is generally found in the prior art.

The cover member 26 comprises preferably a generally substantial st-iif sheet of binders board. Covering material 5 extends from the inner and outer surfaces of flange 3 and continuously over the board of cover member 26. This covering material is turned over at the edges of the members mentioned and secured thereto and also provides a hinge between flange 3 and the cover. A wear sheet 27 is secured over the inner surface of cover member 26 and overlaps the edges of the material 5.

Cover member 28, comprising a binders board is hinged to bar 9 by means of the covering material 7 similar to the hinging of cover member 26 to flange 3 by material 5. Wear sheet 29 covers the inside of mem ber 23 and overlaps the edges of material 7. The covering material 7 has openings for receiving posts 22 on the inside of bar 9.

It will be noted that with the locking mechanism locked, and the binder in unextended position, the sheets may readily be referred to in the same manner as any bound volume, such as a book. In other words, both cover members may be fully opened and the bundle of loose sheets on the tubular posts 22 will be supported normally to the back of the binder. If it is desired to extend the binder so that it may be used for reference without releasing the sheets, it is only necessary to slide the intermediate backing plate 6 horizontally relative to the remaining two backing plates and thereby extend the back of the binder until stops 8 engage stop ears 15. When it is desired to insert additional sheets, the locking mechanism is moved to an unlocked position and certain of the sheets transferred to the plurality of solid posts which are secured to the transfer bar, the balance of the sheets remaining on the tubular posts secured tothe postcarrying bar 9. The sheets to be added may then be placed on either the tubular posts or the solid posts and the sheet supporting members again placed together with the posts telescoping.

The metal parts for the binder are of single construc-.

tion and are all confined inside the cover with no metal rivets or parts exposed on the outside of the binder. The appearance is thereby improved and the binder does not scratch the desk top or book shelf or table.

The flange 11 and locking means are free of the covering material so that the flange 11 and locking means may be assembled as a unit after the covering has been applied. Referring to the stops 8 and 15 it is possible to employ a; T-shaped stud 30 riveted to back member 7 and turnable to locking position for assembly purposes, as illustrated in Fig. 9.

Various embodiments of the invention may be employed within the scope of the following claims.

I claim:

1. In a loose-leaf binder, a back section comprising superimposed spaced relation to receive said slidable plate therebetween, a slidable locking bar carried by the inner of said flanges and disposed intermediate the spaced portions of said flange-forming edges, a post bar disposed adjacent said slidable back plate and being hingedly secured thereto at an edge opposite said flanged edges, a plurality of telescopic sheet impaling posts having one member of each secured to said post bar, and a transfer bar having the other member of each post secured thereto, said locking bar and said transfer bar having interengaging portions whereby said posts assume a parallel position with respect to said back plates when said transfer bar is locked in closed position.

2. In a loose-leaf binder, a back section comprising a plurality of metal back plates, one of said back plates being slidably disposed between others of said back plates and in parallel relationship thereto, an upstanding flange formed from a corresponding logitudinal edge of each of said latter named back plates, means, securing said latter named plates in spaced parallel relationship, the inner of said upstanding flanges being of channel shape with the open channel facing the outer flange and having a plurality of openings extending from the top edge thereof for a substantial distance toward the bottom edge thereof, a slidable locking bar carried in said channel with one end extending therefrom for manual operation thereof and'disposed intermediate said upstanding flanges for longitudinal movement relative thereto, a post bar disposed adjacent said slidable back plate and being hingedly secured thereto, a plurality of telescopic sheet impaling posts having one member of each secured to said post bar, a transfer bar having the other member of each post secured to one face thereof for co-operation with saidfirst named members, a plurality of locking studs secured to the opposite face of said transfer bar and spaced therealong corresponding to the spacing of said openings in said channel flange to enter the same for interlocking engagement by said locking bar, and continuous covering material for said slidable plate and for said outer plate leaving said inner plate and locking mechanism exposed and free of covering.

3. In a loose-leaf binder, a back section comprising a plurality of metal back plates disposed in parallel relationship, one of said back plates being slidably disposed between others of said back plates, an upstanding flange formed from a corresponding longitudinal edge of each of said latter named back plates and being juxtaposed in parallel relationship, means disposed to secure said flanges together with a longitudinal portion of each in predetermined spaced relation and with the corresponding" plates in superimposed spaced relation to receive said.

slidable plate therebetween, a slidable locking bar carried by the inner of said flanges and disposed intermedi-' ate the spaced portions of said flange-forming edges, a post bar disposed adjacent said slidable back plate and being hingedly secured thereto at an edge opposite said flanged edges, a plurality of telescopic sheet impaling posts having one member of each secured to said post bar, a transfer bar having the other member of each post secured thereto, said locking bar and said transfer bar having interengaging portions whereby said posts assume a parallel position with respect to said back plates when said transfer bar is locked in closed position, and interlocking means between the inner back plate and the back plate adjacent thereto to prevent separation thereof and to prevent release of the telescoping posts when the transfer bar is unlocked.

References Cited in the file of this patent UNITED STATES PATENTS 1,009,685 Page et a1 Nov. 21, 1911 6 Hulseman Oct; 15,- 1929 Warner Mar. 3, 1931 Franz Apr 21, 1931 Unger Nov. 29, 1932 Barrett Mar. 17, 1936 Buckner Nov. 29, 1949 

